385689611 has 2 divisors, whose sum is σ = 385689612. Its totient is φ = 385689610.

The previous prime is 385689581. The next prime is 385689697. The reversal of 385689611 is 116986583.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-385689611 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (385689211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192844805 + 192844806.

It is an arithmetic number, because the mean of its divisors is an integer number (192844806).

Almost surely, 2^385689611 is an apocalyptic number.

385689611 is a deficient number, since it is larger than the sum of its proper divisors (1).

385689611 is an equidigital number, since it uses as much as digits as its factorization.

385689611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 47.

The square root of 385689611 is about 19638.9819237149. The cubic root of 385689611 is about 727.9127284136.

The spelling of 385689611 in words is "three hundred eighty-five million, six hundred eighty-nine thousand, six hundred eleven".